請老師幫忙分析下這個句子的句子成分:Last year,scientists saw some monkeys rubb

題目：

請老師幫忙分析下這個句子的句子成分:Last year,scientists saw some monkeys rubbing themselves with
Last year,scientists saw some monkeys rubbing themselves with a certain kind of insects to protect themselves from fierce mosquitoes biting.請老師幫忙分析下這個句子的句子成分.

解答：

主語：scientists
謂語:saw
賓語：some monkeys
賓語補足語：rubbing themselves with a certain kind of insects to protect themselves from fierce mosquitoes biting
賓補中的方式狀語： with a certain kind of insects
賓補中的目的狀語： to protect themselves from fierce mosquitoes biting